chore: bump @types/node from 14.14.33 to 15.12.2 in /striker-ui

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 14.14.33 to 15.12.2.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

---
updated-dependencies:
- dependency-name: "@types/node"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

striker-ui/package-lock.json

@@ -637,9 +637,9 @@
       "dev": true
     },
     "@types/node": {
-      "version": "14.14.33",
+      "version": "15.12.2",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.33.tgz",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-15.12.2.tgz",
-      "integrity": "sha512-oJqcTrgPUF29oUP8AsUqbXGJNuPutsetaa9kTQAQce5Lx5dTYWV02ScBiT/k1BX/Z7pKeqedmvp39Wu4zR7N7g=="
+      "integrity": "sha512-zjQ69G564OCIWIOHSXyQEEDpdpGl+G348RAKY0XXy9Z5kU9Vzv1GMNnkar/ZJ8dzXB3COzD9Mo9NtRZ4xfgUww=="
     },
     "@types/normalize-package-data": {
       "version": "2.4.0",

striker-ui/package.json

@@ -25,7 +25,7 @@
   "devDependencies": {
     "@commitlint/cli": "^12.1.4",
     "@commitlint/config-conventional": "^11.0.0",
-    "@types/node": "^14.14.26",
+    "@types/node": "^15.12.2",
     "@types/react": "^17.0.11",
     "@types/styled-components": "^5.1.10",
     "@typescript-eslint/eslint-plugin": "^4.26.1",